US Markets (Sept 23): Muse impacts financial stocks, Nasdaq hits new high on storage chips

US markets showed divergence on Tuesday. The Nasdaq rose 0.45% to 27244.28, marking its second consecutive record closing high, while the S&P 500 remained flat and the Dow fell 0.36%. Concerns over the AI agent Muse disrupting wealth management, travel, and e-commerce sectors pressured stocks like Schwab, JPMorgan, and Airbnb. Meanwhile, the Philadelphia Semiconductor Index rose for the sixth straight day, driven by strong performance in storage stocks like Micron and SanDisk. Oil prices fell below $100 per barrel, and investors are awaiting US S&P Global PMI data.